Marine turbine.



T. Gv. E. LINDMARK.

` MARINE TURBVINE. APPLIUATION FILED Dms, '1907.

899,547. Patented sep1;.-29, 1908 O r O O o Q 'versing action.

@Frietr roar: eUsrAF EMANUEL LINDMARK, oF STOCKHOLM, swEimN.

MARINE TURBINE.

No. s99,547.

To allwhom it may concern: B'e it-known that I, ToRE GmsrArv EMAN- UEL LINDMARK, engineer, subject of Sweden, residing at Stockholm, Sweden, havel invented new and usefullmprovements in Marine Turbines, of which the following is a specification.

The invention relates to turbine propellin mechanisms for vessels and has for its object improved economy in operation and the attainment of a powerful and quick re- Three parallel propeller shafts are provided. On each side shaft is mounted a coin aratively ra id rotating turbine, which tur Ai-nes are coup ed in series, so that onecon's/ titutes a high pressure turbine, whereas thelsec nd constitutes an intermediatepressure tirbi e.

On the middle' shaft is mounted a com ara` tively slow rotating lowV press ev tur ine, which receives steam from the i termediate pressure turbine. yOn saild middlefsha-ft is mounted a reversing turbine, which may be built togetherwith the low pressure turbine. A third turbine may be mounted on the middle shaft, if desired, which when used, is coipl'ed in front of the high pressure turbine. e accompanying drawing shows the arrangement of the ap aratus in plan view.

A', and C are pro eller'shafts. A turbine shaft B and va turbine L on shaft C.- On shaft C in advance/fturbine L may alsojbef'v mounted a turb'ig Knd with turbi L maybe combined atjE, a reversing/turbine. D is the mam steam.'pipernmumcatmg -with turbines H and K, va.rid 'having a branch' pipe U leading to the reversing turbineatjE. Pipe connections, as shown, are providedbetween turbines Hand K, H and M, andM and L. Turbines L and-K are separately connected to the condenser P.

rectly to turbine.

M and L and condenser.

' ATurbine L 1s of large dimensions and is a llow pressure turbine. The reversing turbine Specification o! Letters Patent'. Application mea December a, 1907. serial No. 404,919.

and thence to turbines Patented Sept. 29, 1908.

at E is also of large dimensions, but, as it ma take steam directly from the branch pipe it may be o erated with great power d1- rectly from the boiler.

It is, of course, to beunderstood that in the various connections, valves are toj be provided for causing the steam to pass .as desired. `SuchI a valve `is indicated at v which when shut cuts out turbine K,'so that steam then proceeds, flrst, to turbine H, as indilcated by the arrowsj By arranging the turbines H an'd M on thev vside shafts for comparatively rapid motion and'for aV smallerfpart of the total amountA of ower the advanta e is gained, that said -tur ines,.which `are su jected to the highest pressure and the highest temperature, may' ave comparatively small dimensions. This will moderate deformations and displacements of the 'turbine casings, and make it possible to arrange tightenings between the 'l rotating and the stationary; parts convenientl -On the :contrary/'t e low' pressure turbi e L is arranged for comparatively slow motion and for a large amount of power, and is 'ven for this reasoncomparatively large dlmensions. As it however/receives steam of low pressure from the intermediate I turbineM it .w ill notbe subjected to the effects of too high temperature and hence to injurious deformations and' displacements. Tightenings need .moreover not e carefully prranged, as the pressure -in the turbine 1s Because of the comparatively slowmotion 'of the middle shaft on which the reversin turbine vE is mounted,the propeller on said shaft may have comparatively large dimensions, whereby the backward motion, which is performed only with the'middle shaft, will be owerful.

claim:

1. I n a turbine propelling mechanism, three propeller shafts, a high pressure turbine on themiddle shaft, lan intermediate pressure turbine on each of the side shafts; the i said turbines being arranged for ra id mo.-

ranged for slow motion and for the-utilization of a large part of the vtotal amount of power.

2. In a turbine propelling mechanism, three parallel ropelleg shafts, a tllrbin'e'on each shaft and) fluid is led successivly'to the .turbines on the connections whereby motor outer shafts and then to the turbine on the middle shatt;V the turbines on the outer shaft being constructed for rapid motion and utilization of a minor proportion of the total power expended and the turbine on the middle shaft being constructed for slow motion and the utilization of a-major proportion of said power.

3. In a turbine propelling mechanism, a propeller shaft, a condenser, two turbines on said shaft, one of said turbines being oi'larger dimensions than the other, and connections for leading motor fluid directly from either turbine to said condenser, and a connection for leading the exhaust of the smaller turbine to the inlet of the larger turbine.

4. In a turbine propelling mechanism, a propeller shaft, and on said shaft a high pressure turbine and two turbines both of larger dimensions than said high pressure turbine, one -of said two turbines being a reversing turbine, and inde endent connections for leading motor lui from said high pressure turbine to said direct acting low pressure turv y bine and directly to said reversing turbine, a condenser, an independent connection for leading exhaust from said low pressure and reversing turbines to said condenser, and from said high pressure turbine to said condenser.

5. In la turbine pro )elling mechanism, three parallel propeller shafts, three turbines E, K, L, on the inner shaft, the turbine E being a reversing turbine, and one turbine Il,

M, on each of the outershaits, connections for leadin'g motor Huid successively tel/urbines H, M, L in the order named and a connection for leading motor [luid indepeiulently to turbine E; the said turbines li and'l being of larger dimensions than the other turbines.

In testirnonbT whereof l have signed my name to thls speciiicatlon 1n the presence of two subscribing witnesses.

Witnesses WALDEMAR Bonnin, HJALMAR ZETiEns'riom 

